Tunnel fan operation and maintenance system based on off-line fault diagnosis
By equipping tunnel ventilation fans with offline ventilation fan analyzers, the problems of single measurement points and insufficient analysis in existing technologies are solved, enabling rapid and accurate fault diagnosis and maintenance, and extending the service life of the ventilation fans.
Patent Information
- Application Number
- CN202520077281.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing tunnel ventilation fan monitoring solutions rely on a single measurement point and lack original vibration signals and spectrum analysis, resulting in inaccurate fault diagnosis.
The tunnel ventilation fan operation and maintenance system adopts an offline fault diagnosis-based system, equipped with an offline fan analyzer, which has spectrum analysis and shaft trajectory analysis functions, and realizes fast and simple on-site fault repair through sliding components and threaded rod structure.
It enables fast, simple, and accurate fault diagnosis, and can analyze common faults such as imbalance, misalignment, and shaft bending of internal parts of the fan, thus extending the life of the fan.
Smart Images
Figure CN223536605U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel ventilation fan detection, and in particular to a tunnel ventilation fan operation and maintenance system based on offline fault diagnosis. Background Technology
[0002] Tunnel ventilation fans, also known as tunnel jet fans, are widely used in the actual use of tunnels in water conservancy dam projects, highways, railways, subways, etc. During the manufacturing process, factors such as manufacturing tolerances, gaps during assembly, friction between parts, and imbalance of rotating parts can all lead to mechanical vibration. A 100% precise and vibration-free product only exists in the ideal. In addition to causing a small amount of energy consumption, product vibration can also lead to a shortened product life, excessive noise, or even complete scrapping.
[0003] Existing tunnel ventilation fans are generally equipped with online vibration instrument monitoring schemes, which have relatively simple measurement points and output results only include real-time vibration components, lacking original vibration signals and spectrum analysis. Therefore, a tunnel ventilation fan operation and maintenance system based on offline fault diagnosis is proposed. Utility Model Content
[0004] To address the shortcomings of existing tunnel ventilation systems that typically rely on online vibration monitoring with limited measurement points and output only real-time vibration components without providing original vibration signals or spectral analysis, this invention provides a tunnel ventilation operation and maintenance system based on offline fault diagnosis.
[0005] This utility model provides a tunnel ventilation fan operation and maintenance system based on offline fault diagnosis, which adopts the following technical solution:
[0006] A tunnel ventilation fan operation and maintenance system based on offline fault diagnosis includes a fan body, a connecting rod fixedly installed at the bottom of the fan body, an installation plate fixedly installed at the end of the connecting rod away from the fan body, a placement slot is opened inside the installation plate, and an offline fan analyzer is installed on the inner bottom wall of the placement slot opened inside the installation plate.
[0007] The mounting plate is internally threaded with a first threaded rod, one end of which is rotatably connected to an inclined block. A sliding component is provided on one side of the inclined block. A spring is fixedly installed on the inner wall of the mounting plate, and a moving block is fixedly installed on one end of the spring. A limiting rod is fixedly inserted inside the moving block. The offline fan analyzer has a limiting groove inside that matches the limiting rod. A roller is installed on the end of the limiting rod away from the offline fan analyzer. The roller matches the inclined block, and the inclined block can push the roller to move when it moves.
[0008] By adopting the above technical solution, when using an offline fan analyzer, it is convenient for staff to conduct on-site fault diagnosis and troubleshooting of the fan body. The offline fan analyzer has the characteristics of fast, simple, and accurate connection to the local monitoring system, and is easy to operate. Among them, the vibration value display includes vibration and displacement, and the raw signal output enables the offline fan analyzer to have functions such as spectrum analysis and shaft trajectory analysis, which can analyze various common rotating machinery faults such as imbalance, misalignment, shaft bending, and shaft cracks in the internal parts of the fan body.
[0009] Optionally, the sliding assembly includes a first slider, which is fixedly connected to the tilting block, and the mounting plate has a first groove inside that is adapted to the first slider.
[0010] By adopting the above technical solution, the first slider and the first groove can limit the movement range of the tilting block during use, and at the same time make the tilting block move more smoothly.
[0011] Optionally, a handwheel is fixedly installed at the end of the first threaded rod away from the inclined block.
[0012] By adopting the above technical solution, the handwheel allows the operator to easily rotate the first threaded rod.
[0013] Optionally, a handle is fixedly installed on the upper surface of the offline fan analyzer, and the outer surface of the handle is provided with anti-slip grooves.
[0014] By adopting the above technical solution, the pull rod makes it easy for staff to take out the offline fan analyzer, and the anti-slip groove increases the friction between the staff's hand and the pull rod, which can reduce the slippage of the staff's hand when pulling the pull rod.
[0015] Optionally, a second slider is fixedly installed on each of the opposite sides of the movable block, and a second groove adapted to the second slider is provided inside the mounting plate.
[0016] By adopting the above technical solution, the second slider and the second slide can limit the movement range of the moving block, and at the same time make the moving block move more smoothly.
[0017] Optionally, the handwheel is internally threaded with a second threaded rod, one end of which is rotatably connected to a rubber anti-slip pad, which can contact the mounting plate.
[0018] By adopting the above technical solution, during use, the operator can rotate the second threaded rod, which can drive the rubber anti-slip pad to move, so that the rubber anti-slip pad contacts the mounting plate, thereby fixing the handwheel and reducing the occurrence of unauthorized rotation of the handwheel.
[0019] Optionally, filters are fixedly installed at both the inlet and outlet ends of the fan body.
[0020] By adopting the above technical solutions, the filter screen can reduce the amount of external dust and impurities entering the fan body, thus extending the service life of the fan body.
[0021] Optionally, a rotating block is fixedly installed at the end of the second threaded rod away from the rubber anti-slip pad.
[0022] By adopting the above technical solution, the rotating block allows workers to easily rotate the second threaded rod.
[0023] In summary, this utility model has the following beneficial effects:
[0024] 1. When in use, this utility model, by equipping an offline fan analyzer, facilitates on-site fault diagnosis and troubleshooting of the fan body by subsequent staff. The offline fan analyzer features fast, simple, and accurate connection to the local monitoring system, making it easy to operate. The vibration value display includes vibration and displacement, and the raw signal output enables the offline fan analyzer to have functions such as spectrum analysis and shaft trajectory analysis, which can analyze various common rotating machinery faults such as imbalance, misalignment, shaft bending, and shaft cracks in the internal parts of the fan body.
[0025] 2. When it is necessary to remove the offline fan analyzer, the operator can rotate the handwheel to control the movement of the tilting block. As the tilting block moves, the spring can push the moving block and the limiting rod to move, so that the limiting rod separates from the limiting groove opened inside the offline fan analyzer, thereby enabling the operator to quickly remove the offline fan analyzer. Attached Figure Description
[0026] Figure 1 This is a frontal cross-sectional structural diagram of the present invention.
[0027] Figure 2 This is a front view cross-sectional structural diagram of the mounting plate of this utility model.
[0028] Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0029] Figure 4 This is a schematic diagram of the inclined block structure of this utility model.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Fan body; 2. Connecting rod; 3. Mounting plate; 4. Offline fan analyzer; 5. First threaded rod; 6. Inclined block; 7. Sliding assembly; 71. First slider; 72. First slide groove; 8. Spring; 9. Moving block; 10. Limiting rod; 11. Roller; 13. Handwheel; 14. Hand lever; 15. Second slider; 16. Second threaded rod; 17. Rubber anti-slip pad; 18. Filter screen; 19. Rotating block. Detailed Implementation
[0032] The following description, in conjunction with the embodiments of this utility model, includes appendices. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0033] Please refer to Figure 1 A tunnel ventilation fan operation and maintenance system based on offline fault diagnosis includes a fan body 1. Both the inlet and outlet ends of the fan body 1 are fixedly equipped with filters 18. The filters 18 can reduce the entry of external dust and impurities into the fan body 1 and extend the service life of the fan body 1.
[0034] Please refer to Figure 1 and Figure 2 A connecting rod 2 is fixedly installed at the bottom of the fan body 1. An installation plate 3 is fixedly installed at the end of the connecting rod 2 away from the fan body 1. The installation plate 3 has a placement slot inside, and an offline fan analyzer 4 is installed on the inner bottom wall of the placement slot. In use, the offline fan analyzer 4 facilitates on-site fault diagnosis and troubleshooting of the fan body 1 by staff. The offline fan analyzer 4 features fast, simple, and accurate connection to on-site monitoring systems, making it easy to operate. The vibration value display includes vibration and displacement. The raw signal output enables the offline fan analyzer 4 to perform spectrum analysis and shaft trajectory analysis, allowing analysis of various common rotating machinery faults such as imbalance, misalignment, shaft bending, and shaft cracks within the fan body 1.
[0035] Please refer to Figure 1 and Figure 2 A pull rod 14 is fixedly installed on the upper surface of the offline fan analyzer 4. The outer surface of the pull rod 14 is provided with anti-slip grooves. The pull rod 14 makes it easy for the staff to take out the offline fan analyzer 4. The anti-slip grooves can increase the friction between the staff's hand and the pull rod 14, which can reduce the slippage of the staff's hand when pulling the pull rod 14.
[0036] Please refer to Figure 1 , Figure 3 and Figure 4 The mounting plate 3 has a threaded connection to a first threaded rod 5. One end of the first threaded rod 5 is rotatably connected to an inclined block 6. A sliding assembly 7 is provided on one side of the inclined block 6. The sliding assembly 7 includes a first slider 71, which is fixedly connected to the inclined block 6. The mounting plate 3 has a first groove 72 that matches the first slider 71. In use, the first slider 71 and the first groove 72 can limit the movement range of the inclined block 6 and make the inclined block 6 move more smoothly. A handwheel 13 is fixedly installed at the end of the first threaded rod 5 away from the inclined block 6, which allows the operator to easily rotate the first threaded rod 5.
[0037] Please refer to Figure 1 and Figure 3 A spring 8 is fixedly installed on the inner wall of the mounting plate 3. A movable block 9 is fixedly installed on one end of the spring 8. A second slider 15 is fixedly installed on both sides of the movable block 9. A second groove adapted to the second slider 15 is opened inside the mounting plate 3. The second slider 15 and the second groove can limit the movement range of the movable block 9 and make the movable block 9 move more smoothly.
[0038] Please refer to Figure 1 and Figure 3 A limiting rod 10 is fixedly inserted inside the moving block 9. The offline fan analyzer 4 has a limiting groove inside that matches the limiting rod 10. A roller 11 is installed at the end of the limiting rod 10 away from the offline fan analyzer 4. The roller 11 matches the tilting block 6, and the tilting block 6 can push the roller 11 to move when it moves. When the offline fan analyzer 4 needs to be removed, the operator can rotate the handwheel 13. The handwheel 13 can drive the first threaded rod 5 to rotate. The first threaded rod 5 can drive the tilting block 6 to move with the cooperation of the first slider 71 and the first sliding groove 72. As the tilting block 6 moves, the spring 8 can push the moving block 9 and the limiting rod 10 to move, causing the limiting rod 10 to separate from the limiting groove inside the offline fan analyzer 4, thus allowing the operator to quickly remove the offline fan analyzer 4.
[0039] Please refer to Figure 1 and Figure 3 The handwheel 13 is internally threaded with a second threaded rod 16. One end of the second threaded rod 16 is rotatably connected to a rubber anti-slip pad 17, which can contact the mounting plate 3. During use, the operator can rotate the second threaded rod 16, which will move the rubber anti-slip pad 17, causing it to contact the mounting plate 3 and thus fix the handwheel 13, reducing the possibility of unauthorized rotation. A rotating block 19 is fixedly installed at the end of the second threaded rod 16 away from the rubber anti-slip pad 17, allowing the operator to easily rotate the second threaded rod 16.
[0040] The implementation principle of this utility model is as follows: Through the design of the fan body 1, connecting rod 2, mounting plate 3, offline fan analyzer 4, first threaded rod 5, tilting block 6, sliding assembly 7, first slider 71, first slide groove 72, spring 8, moving block 9, limit rod 10, roller 11, handwheel 13, hand lever 14, second slider 15, second threaded rod 16, rubber anti-slip pad 17, filter screen 18 and rotating block 19, when in use, by equipping it with the offline fan analyzer 4, it is convenient for the staff to perform on-site fault inspection and troubleshooting of the fan body 1. The offline fan analyzer 4 has the characteristics of fast, simple and accurate connection to the local monitoring system, and is easy to operate. Among them, the vibration value display includes vibration and displacement. The original signal output enables the offline fan analyzer 4 to have functions such as spectrum analysis and shaft trajectory analysis, which can analyze various common faults of rotating machinery such as imbalance, misalignment, shaft bending, and shaft cracking of internal parts of the fan body 1.
[0041] When it is necessary to remove the offline fan analyzer 4, the operator can rotate the handwheel 13. The handwheel 13 can drive the first threaded rod 5 to rotate. The first threaded rod 5 can drive the tilting block 6 to move under the cooperation of the first slider 71 and the first sliding groove 72. As the tilting block 6 moves, the spring 8 can push the moving block 9 and the limiting rod 10 to move, so that the limiting rod 10 is separated from the limiting groove opened inside the offline fan analyzer 4, thereby enabling the operator to quickly remove the offline fan analyzer 4.
[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A tunnel ventilation fan operation and maintenance system based on offline fault diagnosis, comprising a fan body (1), characterized in that: A connecting rod (2) is fixedly installed at the bottom of the fan body (1). An installation plate (3) is fixedly installed at the end of the connecting rod (2) away from the fan body (1). A placement slot is opened inside the installation plate (3). An offline fan analyzer (4) is installed on the inner bottom wall of the placement slot opened inside the installation plate (3). The mounting plate (3) is internally threaded with a first threaded rod (5), one end of which is rotatably connected to an inclined block (6). A sliding component (7) is provided on one side of the inclined block (6). A spring (8) is fixedly installed on the inner wall of the mounting plate (3). A moving block (9) is fixedly installed on one end of the spring (8). A limiting rod (10) is fixedly inserted inside the moving block (9). A limiting groove adapted to the limiting rod (10) is opened inside the offline fan analyzer (4). A roller (11) is installed at the end of the limiting rod (10) away from the offline fan analyzer (4). The roller (11) is adapted to the inclined block (6). When the inclined block (6) moves, it can push the roller (11) to move.
2. The tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 1, characterized in that: The sliding assembly (7) includes a first slider (71), which is fixedly connected to the tilting block (6). The mounting plate (3) has a first groove (72) that is adapted to the first slider (71).
3. The tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 1, characterized in that: A handwheel (13) is fixedly installed at the end of the first threaded rod (5) away from the inclined block (6).
4. The tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 1, characterized in that: A pull rod (14) is fixedly installed on the upper surface of the offline fan analyzer (4), and the outer surface of the pull rod (14) is provided with anti-slip grooves.
5. The tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 1, characterized in that: The moving block (9) is fixedly installed with a second slider (15) on both sides, and the mounting plate (3) has a second groove inside that is adapted to the second slider (15).
6. The tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 3, characterized in that: The handwheel (13) is internally threaded with a second threaded rod (16), and one end of the second threaded rod (16) is rotatably connected to a rubber anti-slip pad (17), which can contact the mounting plate (3).
7. The tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 1, characterized in that: The inlet and outlet ends of the fan body (1) are both fixedly equipped with filter screens (18).
8. A tunnel ventilation fan operation and maintenance system based on offline fault diagnosis according to claim 6, characterized in that: A rotating block (19) is fixedly installed at the end of the second threaded rod (16) away from the rubber anti-slip pad (17).